Improve documentation and tests.

README.html

@@ -745,5 +745,6 @@ and LuaForge:
 <li>values associated with weak keys may linger longer than expected
 <li>behavior of luaj when a SecurityManager is used has not been fully characterized
 <li>negative zero is treated as identical to integer value zero throughout luaj
+<li>lua compiled into java bytecode using luajc cannot use string.dump() or xpcall()
 </ul>
 

test/lua/iolib.lua

@@ -1,5 +1,5 @@
 local platform = ...
-print( 'platform', platform )
+--print( 'platform', platform )
 
 -- simple io-library tests
 -- 

test/lua/mathlib.lua

@@ -1,5 +1,5 @@
 local platform = ...
-print( 'platform', platform )
+--print( 'platform', platform )
 
 local aliases = {
 	['0']='<zero>',

test/lua/stringlib.lua

@@ -149,7 +149,10 @@ strtests('lower', string.lower, s )
 strtests('upper', string.upper, s )
 strtests('reverse', string.reverse, s )
 strtests('char', string.char, 92, 60, 61, 93 )
-print( 'string.dump test:', load(string.dump(function(x) return 'foo->'..x end),'bar')('bat') )
+stringdumptest = function() 
+	return load(string.dump(function(x) return 'foo->'..x end),'bar')('bat')
+end
+print( 'string.dump test:', pcall(stringdujptest) )
 
 
 -- floating point formats (not supported yet)